If you started with 1000 units of a radioactive element that has a half-life of 2,500 years, how many half-lives will the material have gone through in 7500 years? (Show work and explain answer).

Betsy drives at 10 m/s on an entrance ramp and enters a highway where she increases her speed to 24 m/s in only 3 seconds. What was Betsy's acceleration?

Why isn't the periodic table a normal table of rows and columns?

What are the malleus, incus, and stapes are collectively called?

Where is arrick?

What is the pH of borax solution with a hydroxide ion concentrattion,[OH-], of 1.25*10^-5M

Glucose is not made from which of the following

Rank the temperatures from the highest to the lowest. 133F 351K 25C 273K 146C 58F 95F

Calculate the density of sulfuric acid if 35.4 mL of the acid weighs 65.14 g.

Where the single machos?

A reaction will be spontaneous only at low temperatures if both ΔH and ΔS are negative. For a reaction in which ΔH = - 320.1 kJ/mol and ΔS = - 86.00 J/K · mol. Determine the temperature (in °C) below which the reaction is spontaneous.